Improvement in machines for shaving shingles



L. H. HALL.

n BALANCE SLIDE-MNE. No. 186,129.' Patented Jan. 9,1877.

UNITED STATES PATENT OFFICE.

LEONARD n. BALL, or zum, PENNSYLVANIA.

IMPROVEMENT IN BALANCE CLIDEVALVE..

Speelman fat-ing pm of .latten Patent lo. lllllstod Janny 9, im; lpplieuion Med October il, 1876.

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